Cheapest return flights from Istanbul to Kathmandu in September from $488

AirHint found the following cheapest return flights from Istanbul (IST) to Kathmandu (KTM) in September 2026 (see full year).

Return flights

01 Sep - 01 Oct Air Arabia
09 Sep - 27 Sep Air Arabia
02 Sep - 02 Oct Air Arabia
30 Sep - 16 Oct Air Arabia
12 Sep - 03 Oct Air Arabia
13 Sep - 04 Oct Air Arabia
24 Sep - 11 Oct Air Arabia
02 Sep - 02 Oct Turkish Airlines direct
30 Sep - 16 Oct Turkish Airlines direct
09 Sep - 27 Sep Turkish Airlines direct
13 Sep - 04 Oct Turkish Airlines direct
24 Sep - 11 Oct Turkish Airlines direct

Also check the deals for one-way flights from Istanbul to Kathmandu in September.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu

Feel free to contact us with any feedback or request another flight research.